Display screen with an animated graphical user interface



FIG. 1 is a front view of a first image in a sequence for a first embodiment of a display screen with an animated graphical user interface showing our new design;

FIG. 2 is a second image thereof; and,

FIG. 3 is a third image thereof.

The appearance of the animated graphical user interface sequentially transitions between the images shown in FIGS. 1-3. The process or period in which one image transitions to another forms no part of the claimed design. The broken line at the periphery of the figures illustrate a display screen and the remaining broken lines illustrate portions of the animated graphical user interface. None of the broken lines form part of the claimed design. 

CLAIM The ornamental design for a display screen with an animated graphical user interface, as shown and described. 